Suppress Autofill popup if it would be outside the viewport.

chrome/browser/ui/autofill/chrome_autofill_client.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/autofill/chrome_autofill_client.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 238 matching lines @@
 void ChromeAutofillClient::ShowAutofillPopup(
     const gfx::RectF& element_bounds,
     base::i18n::TextDirection text_direction,
     const std::vector<autofill::Suggestion>& suggestions,
     base::WeakPtr<AutofillPopupDelegate> delegate) {
   // Convert element_bounds to be in screen space.
   gfx::Rect client_area = web_contents()->GetContainerBounds();
   gfx::RectF element_bounds_in_screen_space =
       element_bounds + client_area.OffsetFromOrigin();
 
+  if (element_bounds.IsEmpty() ||
+      !gfx::RectF(client_area).Contains(element_bounds_in_screen_space)) {
+    // The field associated with the popup:
+    // - takes up zero space (and is possibly not in the DOM), or
+    // - is partially or fully outside the viewport,
+    // so we suppress the popup to avoid crbug.com/678713
+    return;
+  }
+
   // Will delete or reuse the old |popup_controller_|.
   popup_controller_ =
       AutofillPopupControllerImpl::GetOrCreate(popup_controller_,
                                                delegate,
                                                web_contents(),
                                                web_contents()->GetNativeView(),
                                                element_bounds_in_screen_space,
                                                text_direction);
 
   popup_controller_->Show(suggestions);
@@ skipping 126 matching lines @@
 }
 
 void ChromeAutofillClient::ShowHttpNotSecureExplanation() {
   web_contents()->OpenURL(content::OpenURLParams(
       GURL(kSecurityIndicatorHelpCenterUrl), content::Referrer(),
       WindowOpenDisposition::NEW_FOREGROUND_TAB, ui::PAGE_TRANSITION_LINK,
       false /* is_renderer_initiated */));
 }
 
 }  // namespace autofill